drm/nouveau: fix runtime pm imbalance on error

pm_runtime_get_sync() increments the runtime PM usage counter even
the call returns an error code. Thus a pairing decrement is needed
on the error handling path to keep the counter balanced.

Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
index 6697f960dd899eaa8e28783d472a1b19a4831712..4c3f131ad31da368b200ea7c42e72e30f36835f4 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_gem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
@@ -159,8 +159,8 @@ nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
                        if (!WARN_ON(ret < 0 && ret != -EACCES)) {
                                nouveau_gem_object_unmap(nvbo, vma);
                                pm_runtime_mark_last_busy(dev);
-                               pm_runtime_put_autosuspend(dev);
                        }
+                       pm_runtime_put_autosuspend(dev);
                }
        }
        ttm_bo_unreserve(&nvbo->bo);